公开(公告)号：US20140254385A1

公开(公告)日：2014-09-11

申请号：US13857534

申请日：2013-04-05

Applicant: BROADCOM CORPORATION

Inventor： Vahid Tabatabaee ,  Bruce Hui Kwan ,  Puneet Agarwal

IPC: H04L12/801

CPC classification number: H04L47/12 ,  H04L43/062 ,  H04L43/0882 ,  H04L47/11 ,  H04L47/20 ,  H04L47/25 ,  H04L47/26 ,  H04L47/52 ,  H04L47/522 ,  H04L49/15

Abstract: In various embodiments, a system includes a switch comprising a resource that is shared between multiple objects. The switch comprises circuitry that determines a congestion metric for the switch in response to an amount of used of the resource by the objects. The circuitry determines a feedback parameter that is responsive to the congestion metric. The circuitry generates a congestion notification message that comprises a congestion feedback value responsive to the feedback parameter.In further embodiments, a system includes a switch that processes data for a first data link layer access network. The switch includes circuitry that identifies whether a received packet originated from a source device that shares the same network layer access layer as the switch. If the source device shares the same network layer access network as the switch, the circuitry generates a congestion notification message comprising a congestion feedback value for the switch.

Abstract translation: 在各种实施例中，系统包括包括在多个对象之间共享的资源的交换机。 交换机包括响应于由对象使用的资源量来确定交换机的拥塞度量的电路。 电路确定响应于拥塞度量的反馈参数。 电路产生包含响应于反馈参数的拥塞反馈值的拥塞通知消息。 在另外的实施例中，系统包括处理第一数据链路层接入网络的数据的交换机。 交换机包括识别接收到的分组是否源自与交换机共享相同网络层接入层的源设备的电路。 如果源设备与交换机共享相同的网络层接入网络，则电路产生包含交换机的拥塞反馈值的拥塞通知消息。

公开(公告)号：US09444741B2

公开(公告)日：2016-09-13

申请号：US14041424

申请日：2013-09-30

Applicant: Broadcom Corporation

Inventor： Puneet Agarwal ,  Bruce Hui Kwan ,  William Brad Matthews ,  Vahid Tabatabaee

IPC: H04L12/801

CPC classification number: H04L47/12

Abstract: Disclosed are various embodiments for facilitating network flows in a networked environment. In various embodiments, a switch transmits data using an egress port that comprises an egress queue. The switch sets a congestion notification threshold for the egress queue. The switch generates a drain rate metric based at least in part on a drain rate for the egress queue, and the congestion notification threshold is adjusted based at least in part on the drain rate metric.

Abstract translation: 公开了用于促进网络环境中的网络流的各种实施例。 在各种实施例中，交换机使用包括出口队列的出口端口来发送数据。 交换机为出口队列设置拥塞通知阈值。 交换机至少部分地基于出口队列的排出速率产生排出速率度量，并且至少部分地基于排出速率度量来调整拥堵通知阈值。

公开(公告)号：US20150131446A1

公开(公告)日：2015-05-14

申请号：US14538730

申请日：2014-11-11

Applicant: BROADCOM CORPORATION

Inventor： Bruce Hui KWAN ,  Chiara Piglione ,  Puneet Agarwal ,  Vahid Tabatabaee

IPC: H04L12/863 ,  H04L12/26 ,  H04L12/865 ,  H04L12/833

CPC classification number: H04L47/6215 ,  H04L43/0882 ,  H04L47/31 ,  H04L47/6275

Abstract: To reduce latency in a network device that buffer packets in different queues based on class of service, packets received from a network are stored in physical queues according to a class of service associated with the packets and a class of service associated with each of the physical queues. The physical queues are scheduled based quality of service requirements of their associated class of service. The physical queues are shadowed by virtual queues, and whether congestion exists in at least one of the virtual queues is determined. Packets departing from at least one of the physical queues are marked when congestion exists in at least one of the virtual queues. The service rate of the virtual queues is set to be less than or equal to a port link rate of the network device.

Abstract translation: 为了减少基于服务等级来缓冲不同队列中的分组的网络设备中的等待时间，从网络接收的分组根据与分组相关联的服务类别和与每个物理相关联的服务类别存储在物理队列中 队列 身体队列是根据其相关服务类别的服务质量要求进行的。 物理队列被虚拟队列遮蔽，并且确定至少一个虚拟队列中是否存在拥塞。 在至少一个虚拟队列中存在拥塞时，会标记从至少一个物理队列中移除的数据包。 虚拟队列的服务速率设置为小于或等于网络设备的端口链路速率。

公开(公告)号：US08976664B2

公开(公告)日：2015-03-10

申请号：US13857534

申请日：2013-04-05

Applicant: Broadcom Corporation

Inventor： Vahid Tabatabaee ,  Bruce Hui Kwan ,  Puneet Agarwal

IPC: H04L12/26 ,  H04L12/801 ,  H04L12/873 ,  H04L12/813 ,  H04L12/933

CPC classification number: H04L47/12 ,  H04L43/062 ,  H04L43/0882 ,  H04L47/11 ,  H04L47/20 ,  H04L47/25 ,  H04L47/26 ,  H04L47/52 ,  H04L47/522 ,  H04L49/15

Abstract: In various embodiments, a system includes a switch comprising a resource that is shared between multiple objects. The switch comprises circuitry that determines a congestion metric for the switch in response to an amount of used of the resource by the objects. The circuitry determines a feedback parameter that is responsive to the congestion metric. The circuitry generates a congestion notification message that comprises a congestion feedback value responsive to the feedback parameter.In further embodiments, a system includes a switch that processes data for a first data link layer access network. The switch includes circuitry that identifies whether a received packet originated from a source device that shares the same network layer access layer as the switch. If the source device shares the same network layer access network as the switch, the circuitry generates a congestion notification message comprising a congestion feedback value for the switch.

Abstract translation: 在各种实施例中，系统包括包括在多个对象之间共享的资源的交换机。 交换机包括响应于由对象使用的资源量来确定交换机的拥塞度量的电路。 电路确定响应于拥塞度量的反馈参数。 电路产生包含响应于反馈参数的拥塞反馈值的拥塞通知消息。 在另外的实施例中，系统包括处理第一数据链路层接入网络的数据的交换机。 交换机包括识别接收到的分组是否源自与交换机共享相同网络层接入层的源设备的电路。 如果源设备与交换机共享相同的网络层接入网络，则电路产生包含交换机的拥塞反馈值的拥塞通知消息。

公开(公告)号：US09571403B2

公开(公告)日：2017-02-14

申请号：US13841966

申请日：2013-03-15

Applicant: Broadcom Corporation

Inventor： William Brad Matthews ,  Vahid Tabatabaee ,  Bruce Hui Kwan ,  Puneet Agarwal

IPC: H04L12/26 ,  H04L12/851 ,  H04L12/841 ,  H04L12/833

CPC classification number: H04L47/2441 ,  H04L47/28 ,  H04L47/31

Abstract: Network devices facilitate flow management through packet marking. The network devices may be switches, routers, bridges, hubs, or any other network device. The packet marking may include analyzing received packets to determine when the received packets meet a marking criterion, and then applying a configurable marking function to mark the packets in a particular way. The marking capability may facilitate deadline aware end-to-end flow management, as one specific example. More generally, the marking capability may facilitate traffic management actions such as visibility actions and flow management actions.

Abstract translation: 网络设备通过分组标记来促进流量管理。 网络设备可以是交换机，路由器，网桥，集线器或任何其他网络设备。 分组标记可以包括分析接收到的分组以确定接收的分组何时满足标记标准，然后应用可配置标记功能以特定方式标记分组。 作为一个具体示例，标记能力可以促进截止期间的端到端流管理。 更一般地，标记能力可以促进诸如可见性动作和流量管理动作之类的交通管理动作。

公开(公告)号：US09356868B2

公开(公告)日：2016-05-31

申请号：US14054766

申请日：2013-10-15

Applicant: BROADCOM CORPORATION

Inventor： Vahid Tabatabaee ,  Bruce Hui Kwan

IPC: H04L1/00 ,  H04L12/801 ,  H04L12/825

CPC classification number: H04L47/11 ,  H04L47/266 ,  H04L47/29

Abstract: A device for performing congestion detection and management at a node of a network may include a congestion management module to monitor an arrival and a departure rate of data packets associated with a queue, a queue size, or a rate of change of the queue size. The congestion management module may identify the queue as a congested queue by one of determining that the arrival rate of the data packets associated with the queue is larger than the departure rate of the data packets associated with the queue, the queue size is larger than a first threshold, or the rate of change of the queue size is larger than a second threshold. The congestion management module may identify the congested queue as a congestion root by determining that the congested queue is not affected by a flow-control signal. A queue buffer temporarily stores data packets associated with the queue.

Abstract translation: 用于在网络的节点处执行拥塞检测和管理的设备可以包括拥塞管理模块，用于监视与队列相关联的数据分组的到达和离开速率，队列大小或队列大小的变化率。 拥塞管理模块可以通过确定与队列相关联的数据分组的到达速率大于与队列相关联的数据分组的离开率来确定队列为拥塞队列，队列大小大于 第一阈值或队列大小的变化率大于第二阈值。 拥塞管理模块可以通过确定拥塞队列不受流量控制信号的影响来将拥塞队列识别为拥塞根。 队列缓冲区临时存储与队列相关联的数据包。

公开(公告)号：US09197561B2

公开(公告)日：2015-11-24

申请号：US14610024

申请日：2015-01-30

Applicant: BROADCOM CORPORATION

Inventor： Vahid Tabatabaee ,  Bruce Hui Kwan ,  Puneet Agarwal

IPC: H04L12/801 ,  H04L12/873 ,  H04L12/26 ,  H04L12/813 ,  H04L12/933 ,  H04L12/825

CPC classification number: H04L47/12 ,  H04L43/062 ,  H04L43/0882 ,  H04L47/11 ,  H04L47/20 ,  H04L47/25 ,  H04L47/26 ,  H04L47/52 ,  H04L47/522 ,  H04L49/15

Abstract: In various embodiments, a system includes a switch comprising a resource that is shared between multiple objects. The switch comprises circuitry that determines a congestion metric for the switch in response to an amount of used of the resource by the objects. The circuitry determines a feedback parameter that is responsive to the congestion metric. The circuitry generates a congestion notification message that comprises a congestion feedback value responsive to the feedback parameter. In further embodiments, a system includes a switch that processes data for a first data link layer access network. The switch includes circuitry that identifies whether a received packet originated from a source device that shares the same network layer access layer as the switch. If the source device shares the same network layer access network as the switch, the circuitry generates a congestion notification message comprising a congestion feedback value for the switch.

公开(公告)号：US20140219087A1

公开(公告)日：2014-08-07

申请号：US13841966

申请日：2013-03-15

Applicant: BROADCOM CORPORATION

Inventor： William Brad Matthews ,  Vahid Tabatabaee ,  Bruce Hui Kwan ,  Puneet Agarwal

IPC: H04L12/851

CPC classification number: H04L47/2441 ,  H04L47/28 ,  H04L47/31

Abstract: Network devices facilitate flow management through packet marking. The network devices may be switches, routers, bridges, hubs, or any other network device. The packet marking may include analyzing received packets to determine when the received packets meet a marking criterion, and then applying a configurable marking function to mark the packets in a particular way. The marking capability may facilitate deadline aware end-to-end flow management, as one specific example. More generally, the marking capability may facilitate traffic management actions such as visibility actions and flow management actions.

Abstract translation: 网络设备通过分组标记来促进流量管理。 网络设备可以是交换机，路由器，网桥，集线器或任何其他网络设备。 分组标记可以包括分析接收到的分组以确定接收的分组何时满足标记标准，然后应用可配置标记功能以特定方式标记分组。 作为一个具体示例，标记能力可以促进截止期间的端到端流管理。 更一般地，标记能力可以促进诸如可见性动作和流量管理动作之类的交通管理动作。